android-15-standards

name	Android 15 Standards
description	Guidelines for maintaining strict Android 15 (SDK 35) compliance in Varisankya.

Android 15 Standards (SDK 35+)

Varisankya is a showcase of modern Android development, strictly enforcing minSdk = 35 (Android 15). This skill outlines the technical and architectural reasons for this decision and the standards it imposes.

1. Native Edge-to-Edge Enforcement

Android 15 makes edge-to-edge layout mandatory. Varisankya embraces this proactively:

• No Legacy Insets: We do not handle legacy fitsSystemWindows.
• Native APIs: We rely entirely on WindowCompat.setDecorFitsSystemWindows(window, false) and enableEdgeToEdge() in BaseActivity.
• Bottom Sheets: All bottom sheets must handle their own insets to avoid navigation bar overlap.

2. Modern Security & Privacy

Targeting SDK 35 allows us to use the strictest security defaults without backward compatibility layers:

• Credential Manager: We use androidx.credentials exclusively for authentication (Google Sign-In). Legacy GoogleSignInClient is banned.
• BiometricPrompt: We use androidx.biometric with strict BIOMETRIC_STRONG requirements.
• Privacy Sandbox: We adhere to the latest privacy sandbox limitations for tracking and data access.

3. Clean Architecture (No Legacy Support)

The minSdk 35 requirement is a strategic choice to avoid technical debt:

• No AndroidX Compat Shims: Where native APIs exist in SDK 35, prefer them over Compat wrappers if the wrapper adds significant bulk for older OS versions.
• Latest Dependencies: Always use the alpha/beta versions of Core KTX and Lifecycle libraries that target the newest platform features.

4. UI/UX Implications

• Haptic Feedback: Use HapticFeedbackConstants introduced in newer APIs (e.g., CONFIRM, REJECT) freely.
• Predictive Back: Ensure all Views and Activities support the predictive back gesture animation natively.